42997217847 has 8 divisors (see below), whose sum is σ = 57767255040. Its totient is φ = 28445996280.

The previous prime is 42997217821. The next prime is 42997217849. The reversal of 42997217847 is 74871279924.

42997217847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42997217847 - 2¹¹ = 42997215799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42997217849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54703447 + ... + 54704232.

It is an arithmetic number, because the mean of its divisors is an integer number (7220906880).

Almost surely, 2^42997217847 is an apocalyptic number.

42997217847 is a deficient number, since it is larger than the sum of its proper divisors (14770037193).

42997217847 is a wasteful number, since it uses less digits than its factorization.

42997217847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109407813.

The product of its digits is 14224896, while the sum is 60.

The spelling of 42997217847 in words is "forty-two billion, nine hundred ninety-seven million, two hundred seventeen thousand, eight hundred forty-seven".